CN115179523A

CN115179523A - Isobaric equal-wall-thickness concentric small splayed cable mold

Info

Publication number: CN115179523A
Application number: CN202211040691.9A
Authority: CN
Inventors: 曾辉; 郭芳泽; 李佳
Original assignee: Hunan Meikang Optoelectronics Co ltd
Current assignee: Hunan Meikang Optoelectronics Co ltd
Priority date: 2022-08-29
Filing date: 2022-08-29
Publication date: 2022-10-14

Abstract

The invention discloses an isobaric equal-wall-thickness concentric small splayed cable mould in the technical field of devices for processing optical cables, which comprises a mould core, wherein a positioning part is coaxially arranged on one end surface of the mould core, a material extruding cavity is arranged in the mould core, and a mounting opening is coaxially arranged on the positioning part; the die head is arranged in the mounting opening and is provided with a material extruding opening; the die sleeve is arranged on the die core and provided with an extrusion cavity matched with the positioning part for use, and the die sleeve is provided with an extrusion port matched with the die head for use; and the positioning structure is used for coaxially connecting the mold core with the mold sleeve. This isobaric wall thickness concentric little splayed cable mould considers extrusion molding aircraft nose reposition of redundant personnel awl ejection of compact pressure homogeneity and avoids appearing defects such as the crooked shape of dropper, and then changes the integrative mould of welding into fixed splayed cable mould of exempting from to transfer, can thoroughly solve optical cable body and hang the line wall thickness off-center, hang the oblique askew and hang line recess both sides not uniform structure size of depth and have the flaw problem.

Description

Isobaric equal-wall-thickness concentric small splayed cable mold

Technical Field

The invention relates to the technical field of devices for processing optical cables, in particular to an isobaric concentric small splayed cable mold with equal wall thickness.

Background

Optical fiber cables (optical fiber cables) are manufactured to meet optical, mechanical, or environmental performance specifications and are telecommunication cable assemblies that utilize one or more optical fibers disposed in a surrounding jacket as the transmission medium and that may be used individually or in groups. The optical cable is mainly composed of optical fibers (thin glass filaments like hair), a plastic protective sleeve and a plastic sheath, and metals such as gold, silver, copper and aluminum are not contained in the optical cable, so that the optical cable generally has no recycling value. The optical cable is a communication line which is formed by a certain number of optical fibers forming a cable core according to a certain mode, is externally coated with a sheath, and is also coated with an outer protective layer for realizing optical signal transmission. Namely: a cable formed by subjecting an optical fiber (optical transmission carrier) to a certain process. The basic structure of an optical cable generally comprises a cable core, a reinforcing steel wire, filler, a sheath and the like, and further comprises a waterproof layer, a buffer layer, an insulated metal wire and other components according to requirements.

For the structure of the small splayed cable of the central tube, the extrusion mode is adopted for the general hanging neck part and the tube extrusion mode is adopted for the cable core part, and the traditional methods comprise the following two types:

(1) The split structure is as follows: because the suspension wire is in an extrusion mode, and the mold core and the mold sleeve are independent of each other, the concentricity precision of a production line debugging mold is very high, the sheath is easy to deviate (namely, the thicknesses of the steel strand and the outer sheath of the cable core are thick on one side and thin on the other side), and the production line debugging consumes time and wastes materials seriously.

(2) Welding the connected structure: compare the isolating construction, mold core and die sleeve are each other as an organic whole, can avoid the uneven problem of suspension wire wall thickness and cable outer sheath completely, greatly shorten mould debugging time, and can reduce waste such as steel strand wires and restrictive coating material, however, this kind of structure mould, the melting material is through annular honeycomb holes infiltration entering mold core conical surface between mold core and the die sleeve, die sleeve V groove compression space, one of them, because airtight welding is died between mold core and die sleeve, the height of cable and hanging neck are totally solid, be unfavorable for melting material pressure control, so lead to the cable core to draw out tightness control more difficult. Secondly, this kind of welded structure mold core and die sleeve concentric circle highly coincide, and it is big to be close to aircraft nose position impact pressure, and steel strand wires can be towards the slight skew of aircraft nose outer edge direction, and the outer wall thickness of aircraft nose part steel strand wires is thick a little by the thick point a little this moment, and it is thin a little to keep away from aircraft nose part steel strand wires outer wall thickness, simultaneously, and it is deep to lean on aircraft nose suspension wire recess, the back of the body side part recess is shallow.

In summary, the splayed cable sheath and the hanging neck are eccentric, and the deep side of one side of the small splayed groove is shallow, which are two major bottlenecks that limit the qualified yield of the production line.

In order to solve the problems, an isobaric concentric small splayed cable mold with the same wall thickness is provided.

Disclosure of Invention

The technical problem to be solved by the invention is to overcome the defects of the prior art, and provide an isobaric equal-wall-thickness concentric small splayed cable mould, in order to solve the technical problems mentioned in the background technology, the invention provides the following technical scheme:

the invention provides an isobaric concentric small splayed cable mould with equal wall thickness, which comprises:

the die comprises a die core, a die head and a die head, wherein a positioning part is coaxially arranged on one end surface of the die core, a material extruding cavity is arranged in the die core, and a mounting opening is coaxially arranged on the positioning part;

the die head is arranged in the mounting opening and is provided with a material extruding opening;

the die sleeve is arranged on the die core and provided with an extrusion cavity matched with the positioning part for use, and the die sleeve is provided with an extrusion port matched with the die head for use;

and the positioning structure is used for coaxially connecting the mold core with the mold sleeve.

In the isobaric equal-wall-thickness concentric small splayed cable mold, the positioning structure comprises four positioning columns connected to the end faces of the mold core, positioning holes for the positioning columns to be inserted and combined are formed in the end faces of the mold sleeve, a cushion block is arranged at one end, penetrating out of the mold sleeve, of the positioning columns, the cushion block is located between the mold core and the mold sleeve, and two shaft end faces of the cushion block are respectively abutted against the end faces of the mold core and the mold sleeve.

In the isobaric equal-wall-thickness concentric small splayed cable mold, the end, away from the mold sleeve, of the positioning column is coaxially provided with the short pin, and the end face of the mold core is provided with the pin hole for the insertion of the short pin.

In the concentric small splayed cable mould with the same pressure and the same wall thickness, four positioning columns are arranged in an array along the axial direction of the mould core.

In the isobaric equal-wall-thickness concentric small splayed cable mold, the cushion block is sleeved on the positioning column in a threaded mode, and the thickness size and the type of the cushion block can be changed.

In the isobaric equal-wall-thickness concentric small splayed cable die, the outer diameter of the positioning part decreases progressively towards the direction away from the die core, and the size change of the inner diameter of the extrusion cavity corresponds to the size change of the outer diameter of the positioning part.

In the isobaric concentric small splayed cable die with the same wall thickness, the end face of the die sleeve is provided with the protruding part, the protruding part and the die sleeve are coaxial, and the extrusion port penetrates through the protruding part.

Compared with the prior art, the invention has the beneficial effects that: the defects that an extrusion molding machine head shunting cone is uniform in discharging pressure and a hanging neck is not distorted are considered, and then a welding integrated die is changed into a fixed die without adjusting the splayed cable, the problems that an optical cable body and a hanging wire are eccentric in wall thickness, the hanging neck is inclined and the structural dimensions of the hanging wire groove are different in depth and the like can be solved thoroughly, the problem that small splayed cables are not concentric, the construction and installation risks are caused due to the fact that the wall thickness is not uniform, and the skin breaking risks are caused, so that the long-term overhead hanging neck stress uniformity of the cables is favorably ensured, and the cable signal transmission stability is improved.

Drawings

The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the principles of the invention and not to limit the invention. In the drawings:

FIG. 1 is a schematic view of an assembly structure of a concentric small V-shaped cable mold with equal pressure and wall thickness according to the present invention;

fig. 2 is a schematic partial cross-sectional view of the structure of fig. 1.

In the figure: 1-mold core, 2-cushion block, 3-positioning hole, 4-extrusion opening, 5-protrusion, 6-mold sleeve, 7-positioning part, 8-positioning column, 9-short pin, 10-extrusion cavity, 11-extrusion cavity, 12-mold head and 13-extrusion opening.

Detailed Description

The preferred embodiments of the present invention will be described in conjunction with the accompanying drawings, and it should be understood that they are presented herein only to illustrate and explain the present invention and not to limit the present invention.

Examples

Fig. 1-2 in the present application show an isobaric equal wall thickness concentric small splayed cable mold, which comprises a mold core 1, a mold head 12, a mold sleeve 6 and a positioning structure, wherein a positioning part 7 is coaxially arranged on one end surface of the mold core 1, the whole positioning part 7 extends towards the outer side of the end surface of the mold core 1, in addition, a material extruding cavity 11 is arranged in the mold core 1, specifically, the material extruding cavity 11 is coaxially arranged in the mold core 1, the mold core 1 is connected on a discharge port of an extruding device through a fastener, thus, a melting material in the extruding operation can enter the material extruding cavity 11 through the discharge port of the extruding device, in addition, a mounting port is coaxially arranged on the positioning part 7, the mold head 12 is mounted in the mounting port and is provided with a material extruding port 13, the mold head 12 is integrally cylindrical, and the mold head 12 is mounted in the mounting port, and the phenomenon that the joint is not leaked is generated, the extrusion port 13 is vertically connected to the die head 12, and the molten material in the extrusion cavity 11 can be extruded from the extrusion port 13 at high pressure, the die sleeve 6 is installed on the die core 1 and is provided with an extrusion cavity 10 matched with the positioning part 7 for use, specifically, the extrusion cavity 10 is a gap enclosed between the die sleeve 6 and the die core 1, the gap is used for accommodating the molten material extruded from the die head 12, the die sleeve 6 is provided with an extrusion port 4 matched with the die head 12 for use, so that the molten material extruded from the die head 12 can be discharged from the extrusion port 4, and the positioning structure is used for coaxially connecting the die core 1 and the die sleeve 6 so as to ensure the appearance quality of the extruded molten material, namely, the phenomena of neck distortion, eccentricity and uneven wall thickness can not occur.

Particularly, the location structure in this embodiment includes four connection and is in reference column 8 on the terminal surface of mold core 1, be equipped with on the terminal surface of die sleeve 6 and supply reference column 8 to insert locating hole 3 that closes, the aperture of locating hole 3 sets for 0.1mm with reference column 8 external diameter tolerance, and the position degree is not more than 1mm, makes four reference columns 8 assemble in four locating holes 3 comparatively conveniently like this, and can avoid the influence that reference column 8 external diameter size deviation inserts in locating hole 3, and the straightness that hangs down of four reference columns 8 and mold core 1 terminal surface is not more than 0.3mm in addition, the one end that reference column 8 worn out die sleeve 6 is equipped with cushion 2, cushion 2 is located between mold core 1, the die sleeve 6 and its two shaft terminal surfaces respectively with mold core 1, the terminal surface of die sleeve 6 offsets tightly, through the location of cushion 2 to mold core 1, die sleeve 6 for mold core 1 has the clearance with die sleeve 6, and then does benefit to the pressure control of melting material, so avoid leading to the difficult problem of cable core tightness control and producing.

Specifically, in this embodiment, the end of the positioning column 8, which is far away from the die sleeve 6, is coaxially provided with the short pin 9, the end surface of the die core 1 is provided with a pin hole for the short pin 9 to be inserted, and the short pin 9 is inserted into the pin hole, so that the positioning column 8 can be quickly assembled on the die core 1.

Specifically, four positioning columns 8 in this embodiment are arranged in an array along the axial direction of mold core 1, so that positioning effect of positioning columns 8 on the mold core and the mold sleeve is better, positioning accuracy of the mold core and the mold sleeve is improved, and play in a certain direction after the mold core and the mold sleeve are assembled is avoided.

Specifically, the cushion block 2 in this embodiment is screwed on the positioning column 8 and the thickness size model thereof is replaceable, so that the cushion block 2 with different thickness size models can be replaced, and further the distance between the mold core 1 and the end face of the mold sleeve is adjusted, so as to adjust the pressure of the extrusion cavity on the molten material.

Specifically, in this embodiment, the outer diameter of the positioning portion 7 decreases in the direction away from the mold core 1, and the size change of the inner diameter of the extrusion cavity 11 corresponds to the size change of the outer diameter of the positioning portion 7, so that the extrusion force applied to the molten material can be increased, and the extrusion molding precision of the molten material is improved.

Specifically, the end face of the die sleeve 6 in this embodiment is provided with the protrusion 5, the protrusion 5 is coaxial with the die sleeve 6, the extrusion port 4 penetrates through the protrusion 5, and the protrusion 5 is arranged, so that the overall rigidity of the die sleeve 6 is improved, and the reduction of the extrusion resistance of the die sleeve is avoided.

Finally, it should be noted that: although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that modifications may be made to the embodiments described above, or equivalents may be substituted for elements thereof. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. The utility model provides an isobaric equal wall thickness concentric little splayed cable mould which characterized in that includes:

the die comprises a die core (1), wherein a positioning part (7) is coaxially arranged on one end surface of the die core (1), a material extruding cavity (11) is arranged in the die core (1), and a mounting opening is coaxially arranged on the positioning part (7);

the die head (12) is arranged in the mounting opening and is provided with an extrusion opening (13);

the die sleeve (6) is arranged on the die core (1) and is provided with an extrusion cavity (10) matched with the positioning part (7) for use, and an extrusion opening (4) matched with the die head (12) for use is formed in the die sleeve (6);

and the positioning structure is used for coaxially connecting the mold core (1) with the mold sleeve (6).

2. The isobaric concentric small splayed cable die with the same wall thickness as the claim 1, wherein the positioning structure comprises four positioning columns (8) connected to the end surfaces of the die core (1), the end surface of the die sleeve (6) is provided with positioning holes (3) for the positioning columns (8) to be inserted, one end of each positioning column (8) penetrating out of the die sleeve (6) is provided with a cushion block (2), the cushion block (2) is positioned between the die core (1) and the die sleeve (6), and two shaft end surfaces of the cushion block (2) are respectively abutted against the end surfaces of the die core (1) and the die sleeve (6).

3. The isobaric equal-wall-thickness concentric small splayed cable mould as claimed in claim 2, wherein one end of the positioning column (8) far away from the mould sleeve (6) is coaxially provided with a short pin (9), and the end surface of the mould core (1) is provided with a pin hole for inserting the short pin (9).

4. The die for equal-pressure equal-wall-thickness concentric small V-shaped cables as claimed in claim 2, wherein four positioning pillars (8) are arranged in an axial array along the die core (1).

5. The isobaric equal-wall-thickness concentric small splayed cable mould according to claim 2, characterized in that the cushion block (2) is sleeved on the positioning column (8) in a threaded manner and the thickness size and model of the cushion block can be changed.

6. The isobaric equal-wall-thickness concentric small splayed cable die as claimed in claim 1, characterized in that the outer diameter of the positioning part (7) decreases progressively in the direction away from the die core (1), and the size change of the inner diameter of the extrusion cavity (11) corresponds to the size change of the outer diameter of the positioning part (7).

7. An isobaric equal-wall-thickness concentric small splayed cable die according to claim 1, characterized in that the end face of the die sleeve (6) is provided with a projection (5), the projection (5) is coaxial with the die sleeve (6), and the extrusion opening (4) penetrates through the projection (5).